# BRC-721E Standard Twitter Thread:\ \ \ Usage Twitter Thread:\ ## Introducing BRC-721E: The Revolutionary Protocol Created by the innovative minds at OrdinalsMarket and BitcoinMiladys, BRC-721E is a groundbreaking protocol that aims to revolutionize the digital asset industry. ### Key Features * Enables **permissionless bridging** from Ethereum (ETH) to Bitcoin (BTC). * Ensures that the assets get **instantly listed on marketplaces** after inscription. * Provides **cost efficiency** for managing large collections. ### What is BRC-721E? BRC-721E is a simple protocol that allows ERC-721 NFTs to seamlessly migrate to Bitcoin on their own schedule, eliminating the need to inscribe an entire collection beforehand. The protocol encodes data directly into the burn transaction (TX) that appoints a Bitcoin address to receive an inscription. ### How is BRC-721E Different? Unlike the Teleburn protocol, which necessitates knowing the inscription ID in advance of burning the Ethereum NFT, BRC-721E allows the burn to take place before the inscription. Consequently, the burn TX serves as an on-chain inscription request. This feature also enables users to receive airdrops. ### How Does BRC-721E Work? Indexers collate data from both blockchains, enabling the provision of rich, dynamic metadata on Bitcoin at a fraction of the cost. BRC-721 inscriptions are approximately 100 bytes, substantially cheaper than inscribing an image. This cost-effectiveness results in a massive increase in quality. ### Current Support The first few BitcoinMiladys NFTs have successfully bridged using BRC-721E, and the collection is already listed on OrdinalsMarket with complete metadata. The introduction of BRC-721E showcases a significant advancement in the field of digital assets, promising a more efficient and cost-effective approach to managing large collections of NFTs. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://patches-1.gitbook.io/ordinals-standards-discussions/ordinals-standards-proposals/brc-721e.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.